4 * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
5 * Copyright 2001, 2002, 2003 Bernardo Innocenti <bernie@codewiz.org>
6 * This file is part of DevLib - See devlib/README for information.
11 * \author Bernardo Innocenti <bernie@develer.com>
13 * \brief Additional support macros for compiler independance
18 * Revision 1.17 2004/08/24 13:32:14 bernie
19 * PP_CAT(), PP_STRINGIZE(): Move back to compiler.h to break circular dependency between cpu.h/compiler.h/macros.h;
20 * offsetof(), countof(): Move back to compiler.h to avoid including macros.h almost everywhere;
22 * Rename header guards;
23 * Don't include arch_config.h in compiler.h as it's not needed there.
25 * Revision 1.16 2004/08/14 19:37:57 rasky
26 * Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
28 * Revision 1.15 2004/08/13 03:23:26 bernie
29 * Adjust a few MSVC tweaks from older projects.
31 * Revision 1.14 2004/08/10 06:56:29 bernie
32 * RESTRICT: New C99-like macro; STATIC_ASSERT: Fix warning for multiple invocation in one file.
34 * Revision 1.13 2004/08/02 20:20:29 aleph
35 * Merge from project_ks
37 * Revision 1.12 2004/08/01 01:21:17 bernie
38 * LIKELY(), UNLIKELY(): New compiler-specific macros.
40 * Revision 1.11 2004/07/30 14:34:10 rasky
41 * Vari fix per documentazione e commenti
42 * Aggiunte PP_CATn e STATIC_ASSERT
44 * Revision 1.10 2004/07/30 14:15:53 rasky
45 * Nuovo supporto unificato per detect della CPU
47 * Revision 1.9 2004/07/29 22:57:09 bernie
48 * vsprintf(): Remove prototype for backwards compatibility with GCC 3.4; ssize_t: Add definition for inferior compilers.
50 #ifndef DEVLIB_COMPILER_H
51 #define DEVLIB_COMPILER_H
53 #include "cpu_detect.h"
56 #if defined __GNUC__ && defined __GNUC_MINOR__
57 #define GNUC_PREREQ(maj, min) \
58 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
60 #define GNUC_PREREQ(maj, min) 0
63 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
64 #define COMPILER_C99 1
66 #define COMPILER_C99 0
70 /*! Concatenate two different preprocessor tokens (allowing macros to expand) */
71 #define PP_CAT(x,y) PP_CAT__(x,y)
72 #define PP_CAT__(x,y) x ## y
73 #define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
74 #define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
75 #define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
77 /*! String-ize a token (allowing macros to expand) */
78 #define PP_STRINGIZE(x) PP_STRINGIZE__(x)
79 #define PP_STRINGIZE__(x) #x
82 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
83 #pragma language=extended
84 #define INTERRUPT(x) interrupt [x]
85 #define REGISTER shortad
86 #define INLINE /* unsupported */
88 /* Imported from <longjmp.h>. Unfortunately, we can't just include
89 * this header because it typedefs jmp_buf to be an array of chars.
90 * This would allow the compiler to place the buffer on an odd address.
91 * The CPU _should_ be able to perform word accesses to
92 * unaligned data, but there are *BUGS* in the 80196KC with
93 * some combinations of opcodes and addressing modes. One of
94 * these, "ST SP,[?GR]+" is used in the longjmp() implementation
95 * provided by the IAR compiler ANSI C library. When ?GR contains
96 * an odd address, surprisingly the CPU will copy the high order
97 * byte of the source operand (SP) in the low order byte of the
98 * destination operand (the memory location pointed to by ?GR).
100 * We also need to replace the library setjmp()/longjmp() with
101 * our own versions because the IAR implementation "forgets" to
102 * save the contents of local registers (?LR).
106 void * sp; /* Stack pointer */
107 void * return_addr; /* Return address */
108 int lr[6]; /* 6 local registers */
111 typedef struct _JMP_BUF jmp_buf[1];
113 int setjmp(jmp_buf env);
114 void longjmp(jmp_buf env, int val);
116 /* Fake bool support */
119 typedef unsigned char bool;
121 #elif defined(_MSC_VER) /* Win32 emulation support */
124 #include <time.h> /* for time_t */
126 /* FIXME: I can't remember why exactly this was needed (NdBernie) */
129 /* Fake bool support */
134 #endif /* !__cplusplus */
136 /* These C99 functions are oddly named in MSVCRT32.lib */
137 #define snprintf _snprintf
138 #define vsnprintf _vsnprintf
140 #elif defined(__GNUC__)
143 #define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
144 #define NORETURN __attribute__((__noreturn__))
145 #define UNUSED(type,arg) __attribute__((__unused__)) type arg
146 #define INLINE static inline __attribute__((__always_inline__))
147 #define LIKELY(x) __builtin_expect((x), 1)
148 #define UNLIKELY(x) __builtin_expect((x), 0)
149 #define RESTRICT __restrict__
151 #define DEPRECATED __attribute__((__deprecated__))
156 /* hack to avoid conflicts with system type */
157 #define sigset_t system_sigset_t
161 #undef system_sigset_t
168 /* Missing printf-family functions in avr-libc/stdio.h */
170 #include <avr/pgmspace.h>
171 int vsprintf_P(char *buf, const char * PROGMEM fmt, va_list ap);
173 /* Support for harvard architectures */
175 #define PGM_READ_CHAR(s) pgm_read_byte(s)
176 #define PGM_FUNC(x) x ## _P
177 #define PGM_ATTR PROGMEM
182 #elif defined(__MWERKS__) && CPU_DSP56K
189 // CodeWarrior has size_t as built-in type, but does not define this symbol.
190 #define _SIZE_T_DEFINED
193 #error unknown compiler
197 /* A few defaults for missing compiler features. */
199 #define INLINE static inline
202 #define NORETURN /* nothing */
205 #define FORMAT(type,fmt,first) /* nothing */
208 #define DEPRECATED /* nothing */
211 #define UNUSED(type,arg) type arg
214 #define REGISTER /* nothing */
217 #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
223 #define UNLIKELY(x) x
229 /* Support for harvard architectures */
231 #define PSTR /* nothing */
233 #ifndef PGM_READ_CHAR
234 #define PGM_READ_CHAR(s) (*(s))
237 #define PGM_FUNC(x) x
240 #define PGM_ATTR /* nothing */
244 /* Misc definitions */
246 #define NULL (void *)0
253 /* Support for hybrid C/C++ applications. */
255 #define EXTERN_C_BEGIN extern "C" {
256 #define EXTERN_C_END }
258 #define EXTERN_C_BEGIN /* nothing */
259 #define EXTERN_C_END /* nothing */
264 * Standard type definitions
265 * These should be in <sys/types.h>, but many compilers lack them.
267 #if !(defined(size_t) || defined(_SIZE_T_DEFINED))
268 typedef unsigned int size_t;
271 #if !(defined(_TIME_T_DEFINED) || defined(__time_t_defined))
273 #endif /* _TIME_T_DEFINED || __time_t_defined */
275 /*! Storage for pointers and integers */
276 /* FIXME: turn this into a typedef? */
279 typedef long utime_t;
280 typedef unsigned char sig_t;
281 typedef unsigned char sigset_t;
282 typedef unsigned char page_t;
284 #if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
286 * \name ISO C99 fixed-size types
288 * These should be in <stdint.h>, but many compilers lack them.
291 typedef signed char int8_t;
292 typedef short int int16_t;
293 typedef long int int32_t;
294 typedef unsigned char uint8_t;
295 typedef unsigned short int uint16_t;
296 typedef unsigned long int uint32_t;
298 #elif defined(__GNUC__) && defined(__AVR__)
299 /* avr-libc is weird... */
300 #include <inttypes.h>
302 /* This is the correct location. */
307 * \name Types for hardware registers.
309 * Only use these types for registers whose contents can
310 * be changed asynchronously by external hardware.
315 /* Registers can be accessed only through 16-bit pointers */
316 typedef volatile uint16_t reg16_t;
318 typedef volatile uint8_t reg8_t;
319 typedef volatile uint16_t reg16_t;
320 typedef volatile uint32_t reg32_t;
325 /* Quasi-ANSI macros */
328 * Return the byte offset of the member \a m in struct \a s
330 * \note This macro should be defined in "stddef.h" and is sometimes
331 * compiler-specific (g++ has a builtin for it).
333 #define offsetof(s,m) (size_t)&(((s *)0)->m)
337 * Count the number of elements in the static array \a a
339 * \note This macro is non-standard, but implmenents a very common idiom
341 #define countof(a) (sizeof(a) / sizeof(*(a)))
344 #endif /* DEVLIB_COMPILER_H */